520 
THE GARDENING WORLD 
April 16, 1892. 
rise about an inch or so above the general surface. 
The white variety S. o. alba is interesting by way of 
contrast. Then there is a form named S. o. 
pyrenaica, with rosy-purple flowers about twice the 
size of those of the type. All three are distinct and 
worthy of a place in the rock garden. The type is a 
native of the mountains of Britain as well as the 
Continent. All should be planted where the soil is 
sufficiently deep to supply moisture to the roots 
during periods of heat and drought in summer. 
Saxifraga sancta.— The habit of tfcis species is 
tufted and dense, forming compact cushions of a 
bright green that is varied only in spring while the 
plant is in bloom. The flowers are produced in a 
compact spike that rises only an inch or two above 
the foliage ; the petals are of a bright yellow, and, 
though not very large, are aided by the long stamens 
of the same hue, in making a display. Where 
planted with this species the ground never looks ' 
bare. 
Draba Mawii.— A patch of this Draba constitutes 
a beautiful object on a rockery on account of its 
dwarf habit and profusion of white flowers. The 
linear-oblong, deeply toothed leaves form little 
rosettes or tufts such as are common in this genus. 
The flowers are relatively large for the size of the 
plant, so that the species is altogether choice in its 
way. It was introduced from the mountains of 
Spain as recently as 1873, yet is not so common 
as might be expected in gardens where rock plants 
receive some attention. 
Draba Aizoon.— The leaves of this species are 
linear and densely arranged in small rosettes, from 
which the flower scapes arise to a height of 1 in. or 
2 in., bearing an umbel of golden yellow flowers. 
The general effect is therefore very different from 
D. Mawii for horticultural purposes, so that there 
is room for both species even in a select collection. 
Hacquetia Epipactis. — Umbelliferous plants 
that flower in spring are rare, and there is 
probably no other species of the order in cultivation 
which blooms at this early period of the year. The 
flower stems, with their whorls of large greenish 
yellow bracts, rise only to a height of 2 in. or 3 in., 
and bear in the centre of the bracts a dense cluster 
of golden yellow flowers. This constitutes the most 
that is to be seen of the plant at this period of the 
year. The deeply three parted and lobed leaves are 
mostly produced later on, when the weather is more 
conducive to growth. 
Iberis saxatile. —The linear, ciliated and some¬ 
what fleshy leaves of this species are smaller than 
those of most other kinds in cultivation. The 
slender, ascending stems are generally about 4 in. to 
6 in. long, and terminate in umbels of small white 
flowers. In the shelter of a cold frame this neat, 
Alpine species often flowers during the winter 
months if the weather is at all mild, but on the 
exposed ledges of the rockery it does not bloom till 
the warmth of spring is making itself felt. It is a 
native of South Europe, and was originally intro¬ 
duced in 1739. 
Erysimum ochroleucum helveticum.— The habit 
of this plant is more erect than that of the type, 
which has the stems procumbent at the base. It is 
also of biennial duration as a rule, and is erect, 
branched near the base, about 6 in. to 1 ft. in height, 
and well clothed with linear-lanceolate or slightly 
toothed leaves. The flowers are darker in colour 
than those of the type, but smaller and bright yellow. 
It requires the shelter of a frame, however, to get it 
in flower thus early. 
--*•- 
EUCHARIS SUBEDENTATA. 
The flowers of this species are produced during the 
winter months, but it varies more or less as to the 
time of their appearance according to the particular 
treatment accorded it. With exception of E. Hart- 
w’egiana, the flowers are smaller than those of any 
other species of Eucharis, but pure white and very 
pretty. They are produced in umbels as in other 
cases, and are horizontal or slightly drooping. 
Both this and E. Hartwegiana are sometimes 
separated from the rest and placed in the genus 
Caliphruria, owing to the reduced condition of the 
corona, but this action is untenable in the face of 
the fact that E. Sanderiana has no crown at all, 
even although it has large and well-developed 
flowers. The specific name subedentata refers to the 
teeth, which should characterise the genus Cali¬ 
phruria, and which is the distinguishing feature of 
C. Hartwegiana, being absent or nearly so. The 
leaves of the plant under notice are ovate-oblong, 
and the flower scape about 18 in. high, and the 
general appearance of the. plant is that of a dwarf 
species of Eucharis. The cultural treatment re¬ 
quired is precisely that of Eucharis, and, as the plant 
comesfrom Columbia, stove temperature is necessary. 
Repotting may be done after the bulbs have flowered, 
using acompost of loam, leaf soil, and sufficient sand 
to keep the whole porous and open. When this 
operation is necessitated the pots of bulbs should be 
placed in a higher temperature to encourage fresh 
growth. 
--I*- 
fiARDENING fflSCELLANY. 
TRADESCANTIA REGINA. 
As recently as 1890 this Tradescantia was introduced 
from Central Peru by Messrs. Linden, Parc Leopold, 
Brussels. It is named after the Queen of the 
Belgians, who, with the king, on a visit to the estab¬ 
lishment took particular notice of this plant. There 
is an illustration of it in L'Illustration Horticole, 
PI. 147, which shows a plant with the large and 
showy leaves arranged in two ranks in the same way 
as Zebrinia pendula. All parts of the plant how¬ 
ever are larger and the habit more erect. The leaves 
are of wonderful size for this genus, and measure 
6 in. or more in length, and ij to ij in .in width, as 
represented in the coloured plate, although they are 
stated to have been reduced by the artist. A broad 
band along the centre of the upper surface is striated 
with transverse lines of deep green, purple, and rose, 
arranged like the bones of a fish. On each side of 
this is a broad grey band showing longitudinal 
green lines upon it. The margin again has a band 
of clear green lines. The under surface as well as 
the stems are of a beautiful violet purple. Flowers 
are therefore unnecessary to establish the reputation 
of the plant, as the foliage alone will constitute a 
sufficient reputation for it. 
CAVE'S NURSERIES, NEWPORT, ISLE OF 
WIGHT. 
Persons visiting the Island, who are interested in 
horticultural pursuits, will find innumerable objects 
of interest in Mr. Cave's well-conducted nurseries. 
The stock of fruit trees is very large and most com¬ 
plete, embracing all the best varieties of Plum, Pear, 
Apple, and Cherry trees, particular attention being 
given to the sorts suitable for culture upon the 
Island. All kinds of forest trees, conifers, and shrubs 
are well grown; the Coniferae assume in many cases 
a brilliant and dazzling foliage, which cannot be 
excelled in any portion of the kingdom. This is no 
doubt due to the pure atmosphere and the large 
proportion of sunshine they receive. Early spring 
is not by any means the best time to see a nursery, 
although to the lover of horticulture there is plenty 
of objects which will command interest here at all 
seasons of the year. For several years past Mr. 
Cave has been devoting a good deal of time and 
attention to the formation of a collection of Orchids, 
and I am pleased to say that his efforts in this 
direction have been most gratifying and encouraging. 
The collection is a representative one, composed 
of Cattleyas, Laelias, Dendrobiums, Oncidiums, 
Odontoglossums, etc., etc., all healthy, thoroughly 
well grown, and absolutely clean. There are also 
fine collections of all kinds of stove and greenhouse 
plants, suitable for the local trade.— J. McNab. 
THE BROAD BEAN. 
In my article under this heading on p. 503, there ar 
two or three points that appear a little obscure, ; 1 
need to be made clearer. At the end of the second 
paragraph in the middle column of the page I 
meant to say, “ which produces more than three 
beans in apod." In the last paragraph, the remark 
"gathered at night time” is obviously incorrect; 
what -was meant was, “ gathered at the right time." 
— R. D. 
DIEFENBACHIA OLBIA. 
The habit of this plant is similar to that of the 
plants already in cultivation, but the leaves are very 
beautifully marked. They measure about 14 in. long 
and about 6 in. across, and are of a rich dark green 
with a broad white band along the centre gradually 
merging into the green, which is variously blotched 
with clear yellow and a few white markings. The 
above indicates what is shown in L 'Illustration 
Horticole, but each leaf varies from another in colour 
and is sometimes half-a-yard in length. The plant 
was introduced from Peru in 1890, by Messrs. Linden, 
Parc Leopold, Brussels, who consider that the 
warm and temperate countries of tropical 
America yet contain marvellous plants worthy of 
those which have preceded them in European 
cultures. Both this and Tradescantia Reginae were 
gathered by a collector who was desired to seek 
especially for novelties with ornamental foliage. 
FORSYTHIA SUSPENSA. 
The beauty of this shrub in the early spring months 
cannot be over-estimated, as no other shrub produces 
such a wealth of clear yellow flowers at this early 
period of the year. The branches being naked, 
show off the large yellow flowers to advantage, and the 
latter harmonise well with the twiggy, straw-coloured 
branches. In growing this shrub the object should 
be to get as much young wood as early in the season 
as possible, so that it may ripen before the leaves 
drop in autumn. Plenty of flowers can be secured in 
this way. Pruning cannot be accomplished till 
after the flowering period, otherwise the flowering 
branches would be cut away. The sooner it is done 
however after this the better. Young and vigorously- 
growing bushes, or those that are annually pruned, 
flower best. 
THE CHINESE YAM. 
When I w r ent to Coollattin as general foreman, 
the gardener drew my attention to a plant and asked 
me to take special care of it. It was potted in an 
8-in. pot and grown in a cool greenhouse, where it 
made a tremendous growth, covering a good sized 
wire trellis where it was expected to flower. Both 
of us were quite ignorant as to what it w'as until an 
